Honestly it took about 2 years to put together, so I really hope you like it!

Honestly it is really good. I am excited for the moment when it 'clicks' and you can see how the algorithm all fits together. Finally the mysterious algorithms start to make a little more sense!

Great question. If you think about the equation that this row of the equation represents: 1 X 10^16 P1' + P2' + P3' + ... = B1 We can approximate this as: 1 X 10^16 P1' ~ B1 P1' = B1 / 1 X 10^16 P1' = 0 Therefore, the pressure correction will always be zero in this cell. Hence the pressure will not change from the initial value that you specify in this cell. Another way to think about this is the A matrix is singular (it has no inverse) until we overwrite one of the coefficients. When we overwrite the diagonal entry the matrix is no longer singular and we can solve the equation. There are other methods of overcoming this issue with the A matrix, and I have left some references in the course textbook which you can look up. Glad you liked the course. It really is awesome!

@@fluidmechanics101 Thank you so much! Great explanation

The translation should be fairly straightforward. I have deliberately written the code in a way that's easiest to understand and translate into other languages, rather than the most efficient approach. Everyone can then use their preferred approach (functions, classes etc) to write their code how they like

So much to do! If I get around to it 😅

I would have a look at OpenFOAM. You can look at all the source code and then work backwards to work out the equations that are being used.

Potentially yes. I think SIMPLE is the easiest, so starting with that one first. Once we have a good foundation with the basics we can do density based / coupled pressure based later

Forever 👍 most people like to just do one lecture a week and take it at their own pace. This is completely fine

I am trying out teachable with this one so I can compare it with Udemy. If we all find it better / worse, the I know which one to go with in future 😃 for now I only plan to have it on teachable

Great feedback thank you. I thought about this for a while and I have two camera views. The second camera view should give a close up of the board, so you should be able to see the equations better. But I agree with you! I am not a professional film maker and need to work on my camera work 😅 When I put up the preview video in a few days time could you give it a watch and let me know what you think? If there is some room for improvement I will see if I can get a better camera setup. I am always looking for feedback and suggestions so thanks a lot

@@fluidmechanics101 Absolutely, it has been a pleasure watching your content. Keep up the good work!

To be honest, there are a lot of different languages that I could use (C++, c#, Fortran77, fortran90, MATLAB, python2, python3, JavaScript, etc etc). If I wrote them in all languages I would be coding for a long time! I decided to go with MATLAB and python3, because these are the languages most engineering students are taught and familiar with. I tried to write the code in a way that is easiest to understand, so people could easily translate into other languages that they preferred. Python and MATLAB also have the advantage that plotting contours and residuals is nice and easy. However, there does seem to be a strong desire for Fortran, so maybe I will do some translation! Generally do people prefer fortran77 or fortran90?

It should be easy enough to convert from python/ MATLAB. I have tried to stick with basic syntax (loops, conditional statements, vectors and arrays only) so that it should be easy enough to convert

Yes. In the final chapter of the course, I go through the code line by line, with references to the equations in the text 👍

These are fair points and I agree. To clarify, I think it is easier to learn languages like MATLAB and python, than Fortran and C. I do not intend to show a preference for one language over another (because i don't think this is helpful for learning CFD) and have deliberately written the code in the course in an easy to follow manner, so you can easily write your own code in whatever language you prefer. After all, everyone has their own preference and I leave that choice to you 😊

@@fluidmechanics101 Thanks for the clarification. Good luck with your new course :)

Completely self-paced. You can go at whatever speed you choose. Some people like to do 1 lecture per week to keep it manageable, but this is entirely up to you

@@fluidmechanics101 Great! I just purchased the course!!!!

I am planning to keep this one on teachable, so we can review which platform gives a better learning experience. For future teaching / courses I can then use the platform whichever gives the best experience

What is your native language? I will see if I can get the subscript translated for you. The difficulty is that a lot of the words are scientific (and speech to text finds it difficult to know what the words are), so I have to go through and check / correct all of the subscript manually 😅 it takes a long time!

​@@fluidmechanics101 I'm south Korean. Actually although I'm not good at English, I can understand your KZfaq video because KZfaq supply automatic subscript and it is quite accurate. For me, reading subscript is not too difficult and also English subscript is easier than translated Korean subscirpt because I've experienced lots of the terminologies and expressions related to fluid dynamical field in English. Problem is listening. I don't know whether your video in your website supplies good automatic subscript as well as KZfaq automatic subscript.(KZfaq automatic subscript in Engish was much more accurate than I've expected.) I think if you upload your lecture video in your channel with closed mode which means only you can watch that video, then you may get KZfaq automatic subscript. Anyway if it is possible to use English subscript, I can take your lecture and I'm really hoping that would be possible.🙏

Great thanks for letting me know. Yes, the videos have English subtitles already. If I want other subtitles in other languages, I have to do the translations myself and upload them (so not as reliable!) But if English subtitles are what you are looking for, then the videos already have these, so you should be fine. If there are any problems, just drop me a message or email and I can get them sorted for you

@Fluid Mechanics 101 Okay then I'm going to apply your lectures soon.(This is my private account not account related to research)

@@fluidmechanics101 Mr. Aidan do you need help on translating to Spanish?

I am currently sorting this out in the teachable back-end. They should be ready soon!

Follow the link and you can get it 🙃

@@fluidmechanics101 yes, I see, but is it find a free course?

Sadly it isn't free. However, if you try it out, I am sure you will find it worth every penny. It really is a fantastic book and course!

There was a bug in the teachable link. It should be fixed now

😂

and matlab as an alternative 💀

C++ is the only thing that I approve as an upgrade to FORTRAN. Python and Matlab just don't have the performance, so the actual algorithm must be run on a performant language

@@MichalloteWhy not C?